The shed?

We have two sheds in the garden. A shed would probably need less work to make it suitable for a layout and has the advantage that I can go to the shed without fear of waking sleeping children. The larger shed is 8ft square, but that one is at the bottom of the garden and doesn't have electricity. I've contemplated setting up a solar power system to charge 12v batteries, but that would be a serious undertaking and I'd need heating in winter, so that's unlikely to happen. I'm not sure how much it'd cost to run mains to it but I think it will be needed for storage so it's probably not an option.

The smaller shed is 6x8th and does have electricity, but also has the freezer as there's no space for it in the kitchen. It is possible to fit a surprising amount of model railway in an 8x6 shed, but I'd need to remove everything else, and work round the freezer, and probably board up the window. I'd be limited to fairly short trains which in some ways is an advantage since they cost less to buy, but I suspect I'd be limited to 2 intermodal twin sets, and I'd like a slightly longer train than that. A narrow gauge layout in shed is still a possibility if I don't build an 00 one there.